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Adsorption of Thiram and Dimethoate on Almeria Soils
Author(s) -
ValverdeGarcía A.,
GonzálezPradas E.,
VillafrancaSánchez M.,
ReyBueno F.,
GarcíaRodriguez A.
Publication year - 1988
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1988.03615995005200060009x
Subject(s) - dimethoate , adsorption , thiram , chemistry , soil water , freundlich equation , environmental chemistry , aqueous solution , organic matter , fungicide , soil science , environmental science , organic chemistry , botany , agronomy , pesticide , biology
The adsorption process of thiram and dimethoate on Almería (East‐Andalucía, Spain) soils from aqueous solution at 30 °C has been studied. The adsorption isotherms may be classified as L type of the Giles classification. The K f values (Freundlich equation) vary between 4.81 to 13.73 for fungicide thiram (tetramethylthiuram disulfide) and between 1.06 to 8.95 for insecticide dimethoate [ O,O dimethyl S ‐( N methylcarbamoylmethyl) phosphorodithioate] depending on the soil type. In relation to the correlations between adsorption parameters and soil properties, the adsorption process of thiram seems be conditioned by the soil organic matter content whereas the adsorption of dimethoate is fundamentally conditioned by specific surface area and by cation exchange capacity.